I wrote to these mailing lists some times ago to announce the new MathML
bidi support in Firefox 12, which is important for Arabic mathematical
formulas. In Bugzilla, there is an old bug  about translating the
MathML start page  in Arabic, Hebrew, Thai and Chinese in order to
see how MathML and BiDi/CTL work together. A student recently translated
the start page in Chinese, so the only remaining language from those
asked by the initial bug reporter is Arabic...
Similarly to Hebrew, the directionality of Arabic text is right-to-left.
However, it is also interesting to note that in some countries the
directionality of the mathematical formulas can be left-to-right  and
in other countries it can be right-to-left . Thanks to the new MathML
bidi support, it is now possible to display the latter in Firefox 12. I
think it would be great to have an Arabic translation of the MathML
start page, using both styles to demonstrate all these possibilities.
Any volunteers from the Mozilla Arabic community to do this translation?
Or to become a mentor  for this bug?